Garage door springs in Vancouver and Clark County wear out by the trip, not by the calendar, which is why we talk about their life in cycles. How many years a spring’s rating buys depends on how often your door runs, how well the spring was matched to the door, and how much rust it meets, which in a damp garage here can be plenty.
When one finally lets go, garage door spring replacement is the fix, and our page on a loud bang from the garage helps confirm that a spring is what you heard. This guide is about the years before that day.
What counts as one garage door spring cycle
One cycle is the door going from fully closed to fully open and back to fully closed, which is DASMA’s definition and the unit every spring rating uses.
Every trip counts, including the ones nobody thinks about: rolling the bins out, letting the dog into the yard, grabbing a jacket from the car. In a house where everyone comes and goes through the garage, the door can rack up three or four trips before the first person leaves for work.
Torsion and extension springs are rated the same way, and a standard residential spring of either type is commonly rated around 10,000 cycles. A spring does about the same work on each cycle whatever the reason for the trip, so the count is what wears it out.
How to turn your daily door use into spring years
Count a week of door trips, work out the yearly total, and divide the spring’s rated cycles by it; the steps below need a pencil and about five minutes of arithmetic.
- Tape a notepad beside the wall button and add a mark each time the door goes up, for seven days.
- Ask everyone who drives in to add a mark for their remote or keypad openings when they get out of the car.
- Divide the week’s total by seven to get cycles per day.
- Multiply by 365 for cycles per year.
- Divide the spring’s rated cycles by that number for its expected years.
Here is the same arithmetic already done for a standard 10,000-cycle spring and for a 30,000-cycle spring, rounded to the nearest tenth of a year.
| Cycles a day | Cycles a year | 10,000-cycle spring | 30,000-cycle spring |
|---|---|---|---|
| 2 | 730 | About 13.7 years | About 41 years |
| 4 | 1,460 | About 6.8 years | About 20.5 years |
| 6 | 2,190 | About 4.6 years | About 13.7 years |
| 8 | 2,920 | About 3.4 years | About 10.3 years |
| 10 | 3,650 | About 2.7 years | About 8.2 years |
Treat the long numbers with suspicion. Rust, a door that has gained weight, or a spring wound wrong can end a spring well before the arithmetic says it should, which is why the next section matters more than the table.
Why one garage door spring outlasts another
Two springs with the same rating can wear out years apart, because handling, installation and the door itself all change how hard each cycle works the steel.
DASMA’s sheet on spring cycle life lists the installation faults that cost cycles: a spring that does not meet the door’s counterbalance requirement, the wrong number of turns, a spring wound backward, and too little or too much stretch, which leaves coils scraping against each other or snaking on the shaft.
Weight is the quiet one. Paint, added trim or anything hung from the door can push it past the maker’s specification, and DASMA warns that added weight can unbalance a door and damage springs. A spring sized for the door as it was built is undersized for the door as it is now.
Weather counts as well. DASMA advises keeping doors closed where possible in climates with frequent precipitation, and says rust reduces the wire’s effective area and starts corrosion pits from which fatigue cracks grow. By NOAA’s 1991 to 2020 normals, Vancouver’s Pearson Field gets measurable rain on roughly 163 days in a typical year.
Lubrication is the cheap part of the answer. DASMA’s cycle life sheet credits regular greasing, done the way the door maker’s manual says, with stretching a spring’s working life; a tune-up is a sensible time to have it done along with the balance check.
Signs a garage door spring is getting tired
A tired spring usually tells you through the door before it breaks: the door gets heavier, loses its balance or starts to drift.
- The door feels heavier to lift by hand, with the opener disconnected, than it did a year ago.
- Lifted to about halfway and released, it no longer stays put. DASMA’s checklist expects a sound door to hold three to four feet above the floor.
- A door that used to stay fully open drifts down from the top, which DASMA ties to too little torque on the spring.
- Rust shows on the coils, especially flaking or pitting rather than a light film.
- Coils scrape or squeal as the door moves, a symptom DASMA links to stretch problems.
- The opener strains or slows on the way up.
Do the halfway test only if the door lifts easily in the first few inches; if it fights you, set it down. None of these signs means the spring will snap today, but each one means it is working harder than it should.
When a torsion spring does break, the coil usually splits apart with a few inches of open space at the break, often after a bang that sounds like something fell in the garage. From that moment the door stays down, and nobody should lift it or run the opener until the spring is replaced.
When a high-cycle spring makes sense
A high-cycle spring makes sense when the table above gives you fewer years between spring visits than you would like.
High-cycle springs carry the same door with more steel and less stress per turn, and that buys cycles. Wikipedia’s garage door article notes that most manufacturers offer 30,000-cycle springs, three times the common standard rating.
They suit a garage used as the main entrance, a household with several drivers, a shop door that runs all day, or anyone who would rather book a spring visit less often. Ask for the cycle rating in writing; a quote that says only “heavy duty” tells you nothing you can check.
A spring visit is also the time to renew the second spring on a two-spring door, since both share the same history, and to look at the cables and bottom brackets that carry the same load every cycle.
How long extension springs last
Extension springs are rated in cycles too, so the same arithmetic applies, but when one snaps without a safety cable threaded through its coils, the loose spring can fly across the garage.
DASMA’s checklist asks whether each extension spring is held by a secure cable through its center. If yours are not, have cables added well before the springs wear through their rating; our torsion versus extension guide compares the two systems in detail.